Display screen or portion thereof with transitional virtual camera shutter graphical user interface



FIG. 1 is a front view of a first image of a display screen or portion thereof with transitional graphical user interface;

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top side plan view thereof;

FIG. 7 is a bottom side plan view thereof;

FIG. 8 shows a perspective view of FIG. 1; and,

FIG. 9 shows a perspective view of FIG. 2.

The broken lines show a display screen or portion thereof and form no part of the claimed design.

The appearance of the image transitions sequentially between the images shown in FIGS. 1 and 2, and 8 and 9. The process or period in which an image transitions to another forms no part of the claimed design. 

CLAIM I claim the ornamental design for a display screen or portion thereof with transitional virtual camera shutter graphical user interface, as shown and described. 